This Sunday the 56th annual Grammy Awards will broadcast from Los Angeles. Since it's the biggest night in music, fans expect greatness from the event. While every ceremony hasn't lived up to expectations, it at least always leaves one memorable moment from the night. Whether it's an amazing performance, an odd duet, or the routine stage crashing, the Grammys always gets people talking the next day. Here are some of the biggest moments that people couldn't get over.